It covered land sales of tribal reservations under the U.S. Indian Removal program, by which they planned to move most eastern tribes to Kansas Territory west of the Mississippi River.
Treaty of Buffalo Creek-January 15, 1838-Article I-The New York Indians also agreed to "cede and relinquish to the United States all their right, title, and interest to the lands secured to them at Green Bay by the Menominee Treaty of 1831, excepting the following tract, on which a part of the New York Indians now reside."
In August 1826, a land company led by former Holland Land Company attorney David A. Ogden had negotiated the purchase of six of the ten reservations allocated to the Seneca tribe in the 1797 Treaty of Big Tree, all of them along the Genesee River: Canawaugus, Geneseo, Do'onondaga'a, Deyuitgaoh, Caneadea and Gardeau.
Seneca young chief Maris Bryant Pierce served as a lawyer representing four of the territories.
Ultimately, the Ogden Land Company abandoned its attempts to purchase the Allegany and Cattaraugus reservations, leading to the Third Treaty of Buffalo Creek in 1842.